<section class='example-view' ng-init='initMethod()'>

    <!-- 控制按钮 -->
    <span ng-click='goback()' class='goBack'>返回</span>
    <span ng-click='loadExample("bar-gradient")' class='codeview'>源码</span>

    <!-- 画布 -->
    <svg id='palette'></svg>

</section>